CONTAMINATION LIQUID HEAD DETECTOR, 1950's

Spare detector head for the contamination meter Item A0513.
For reading liquids

Your comments:

• This is an M2H GM tube which is still in the Centronics Geiger selection guide.
  
  Its working voltage is 370V, plateau length 100V, maximum slope %/V 0.15 Active Length 20mm
  .......... Stella, Hove UK, 17th of March 2010
  
  

A0514